How to encourage appropriate behavior…

ways to say no…”I think I have another partner”
If it’s true!
Please don’t say “I’m sitting this one out” or “I have a partner” if it’s not true. IT IS OKAY to just say “No thank you” without an excuse.
If guys are too creepy, don’t just smile, say something.
How can we respectfully communicate our social values? (There is an unspoken taboo about alcohol and folk dance that doesn’t get clearly communicated to beginners in many cases.)
Be clear.
Maybe talk during the break about what we do and don’t like – sweaty shirts, too tight grips, extra twirls, etc. Offer a discussion circle to express preferences.
Reject those who consistently make you feel uncomfortable, without offering up an excuse.
And if someone does ask why, just say “I don’t feel comfortable dancing with you” and don’t feel bad about it. It’s hard, but it works.
If the way your partner is dancing makes you feel uncomfortable (physically or it’s just creeping you out), stop the swing/courtesy turn/whatever and say “please don’t hold me like that.”
A side strategy would be to reassure people (esp. beginners) that it’s ok to turn down an offer to dance. NO EXCUSES NECESSARY!
If a partner is doing something that is harmful or dangerous, physically move them (their hand, the distance, etc.) into a more safe/comfortable position.